Question 483268: Following is the frequency distribution of systolic blood pressure for smokers and nonsmokers:
Class interval nonsmokers smokers Total
90-109 10 5 15
110-129 24 15 39
130-149 18 10 28
150-169 9 3 12
170-189 2 2 4
190-209 0 2 2
Total 63 37 100
Suppose, A: a nonsmoker B: a smoker C: a systolic blood pressure of 170 or greater
Find
a. P(A)
b. P(B)
c. P(C)
d. P(C )
e. P(C
f. Compare d and e, and comment. Are smoking status and blood pressure level independent event?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Following is the frequency distribution of systolic blood pressure for smokers and nonsmokers:
Class interval nonsmokers smokers Total
90-109 ::::::::::::::10 5 15
110-129 ::::::::::::::24 15 39
130-149 ::::::::::::::18 10 28
150-169 :::::::::::::::9 3 12
170-189 :::::::::::::::2 2 4
190-209 :::::::::::::::0 2 2
Total ::::::::::::::63 37 100
Suppose, A: a nonsmoker B: a smoker C: a systolic blood pressure of 170 or greater
Find
a. P(A) = 63/100
b. P(B) = 37/100
c. P(C) = 6/100
d. P(C|A) = 2/100
e. P(C|B) = 4/100
f. Compare d and e, and comment.
Are smoking status and blood pressure level independent event?
Ans: No.
--------------
Cheers,
Stan H.
|
|
|
